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Panel Meters

DFR0130-B is a type of panel meter used to measure electrical voltage and current. Its main application is for the automation of process controllers and control shell instruments.

Application field

DFR0130-B is used in various industries including automotive, aviation, robotics and engineering. It is used to monitor voltage and current of motors, pumps, and other electrical equipment. It also can be used for the automation of process controllers and display instruments. It also has an on-board display which can be used to display information such as voltage or current, and it can be used as a control panel.

Working Principle

DFR0130-B uses a potentiometer, also known as a variable resistor, to measure the voltage or current. The potentiometer is a component that can be adjusted by turning a knob in order to increase or decrease the resistance. When the resistance is high, the voltage or current is low, and when the resistance is low, the voltage or current is high. Additionally, the panel meter uses two analog inputs to measure the voltage and current separately.

The first input is the voltage input, which is connected to a voltage source, such as a battery or an AC power outlet. This voltage source is then connected to a voltage divider circuit, which consists of two resistors. The voltage at the input of the resistor is divided by the resistor, which results in a voltage at the output. This output voltage is then measured by the panel meter.

The second input is the current input, which is connected to a current source. The current source is then connected to an ammeter, which is then connected to the panel meter. The panel meter measures the current by measuring the voltage across the ammeter. This voltage is then converted to current by the panel meter.

Once the panel meter has measured the voltage and current, it can calculate the value and display it on its display. Additionally, the meter can record and store data over time and can be used for monitoring and control purposes.

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